Pickup arm for phonographs



Sept 1942- E. V. SCHNEIDER PICKUP ARM FOR PHONOGRAPHS ori inal FiledSept. 11, 1940 Patented Sept. 1, 1942 PICKUP ARM FOR PHONOGRAPHS EmmorV. Schneider, Alliance, Ohio, assignor to Alliance ManufacturingCompany, Alliance, Ohio, a corporation of Ohio Original applicationSeptember 11, 1940, Serial tent No. 2,270,972, dated No. 356,313, now PaJanuary 27, 1942.

ivided and this application August '7, 1941, Serial No. 405,820

6 Claims.

The invention relates to electric phonographs and more particularly tocertain improvements in the pick up arm in which is mounted thereproducer which carries the needle for recording or playing back arecord, and the present application is a division of my co-pendingapplication Serial No. 356,313, filed September 11, 1940, now Patent No.2,270,972, granted January 2'7, 1942.

In recent years an increasing number of people have become interested inmaking their own records and playing the same as well as playing theusual commercial records, and this has resulted in a considerable demandfor a moderate priced combination recording and play-back phonograph.

The object of the present improvement is to provide a simple,inexpensive pick up arm adapted for use in phonographs of the generalcharacter mentioned.

Another object is to provide a novel tension means for holding the pickup arm in either operative or inoperative position as desired.

A further object of the invention is to provide such a tension meanswhich will function equally well upon a pick up arm designed forrecording or reproducing, or a combination recording and reproducingarm.

A still further object is the provision of means whereby the pick up armmay be quickly and easily attached or detached when it is necessary tomake repairs or replacements in the phonograph.

Still another object is the provision of means including a rotatablepost for supporting the pick up arm, a channel shaped bracket upon thepost and having notches in its outer end, a channel shaped pick up armfitting over said bracket and interior studs pivoted in said notches anda pull spring connected to the outer end of the pick up arm and theinner end of the bracket for holding the pick up arm assembled upon thebracket.

A still further object of the invention is to provide a pick up arm asabove referred to in which the tension spring is so located that it willnormally hold the pick up arm in either position to which it is moved.

Another object is to provide a pick up arm of this character with anadjustable stop for limiting the downward movement of the pick up arm.

The above objects together with others which will be apparent from thedrawing and following description, or which may be later referred to maybe attained by constructing the improved pick up arm in accompanying themanner illustrated in the drawing in which Figure 1 is a side elevationof a pick up arm constructed in accordance with the invention, partsbeing broken away for the purpose of illustration;

Fig. 2, a bottom plan View of the attaching bracket and the outer endportion of the pick up arm mounted thereon;

Fig. 3, a fragmentary view similar to Fig. 1, showing the pick up arm inthe raised orinoperative position; and

Fig. 4, a detached, perspective View of the supporting bracket for theimproved pick up arm.

Similar numerals refer to similar parts throughout the several views.

A portion of the platform of a phonograph cabinet is indicated at It]and the usual turntable (not shown) may be rotatably supported upon saidplatform in any usual and well-known manner.

A bearing II is fixed upon the platform and has journaled therein thehollow shaft [2 through which may be located the electric cord 13leading to the reproducer (not shown) mounted within the pick up armindicated generally at M.

The pick up arm may be of any usual and wellknown design beingpreferably formed of sheet metal in the form of a stamping having thedepending side flanges l5, front end I6 and rear end 11, and may houseany suitable design of reproducer designed for either recording orplaying back or combination of both.

For the purpose of mounting the pick up arm on the oscillating post l2 achannel shaped bracket indicated generally at I8 is fixed upon the upperend of the post l2.

This bracket is provided with the upright flanges 19 at opposite sides,each flange having a notch 20 in its rear edge.

An ear or lug 2| is stamped up from the longitudinally central portionof the bracket H3 at a point near the forward end thereof.

Headed studs 22 are mounted in the side walls l5 of the pick up arm andare arranged to be received in the notches 20 at the rear edges of thevertical flanges 19 of the channel bracket 18.

A pull spring 23 has one hooked end 24 located through the slot 25 andaperture 26 in the upper rear corner of the pick up arm, the otherhooked end 21 thereof being located through the aperture 28 in the ear2| of the bracket I8.

The spring 23 is thus located at such an angle that with the pick up armin the lowered or operative position as shown in Fig. 1, the spring 23tends to urge the arm downward while when the arm is swung to the raisedor inoperative posiable position so that the lower end of the adjustingscrew 29 contacts the top of the bracket" I8 when the pick up arm is inlowered position v as shown in Fig. 1.

For the purpose of holding the stop screw 29 v in adjusted position, acoil expansion spring3l may be located within the bore ,320)? the boss-30 interposed between the bottom wall thereof and the head 33 of thescrew.

A needle as indicated generally at 34,- of any usual and suitabledesign, for" either recording or reproducing, as the case may be, may becarried by the reproducer (not shown) within the forward end of thehollow pick up arm and held in position in usual and well-known manneras by the set screw 35 received in the vertical slot 36 in the forwardend wall I6 of the pick up arm.

In the position shown in Fig. 1,' the pick up arm is in position foreither recording or reproducing a record, the needle 34 being'inposition to engage the record upontheturntable (not,

shown).

When it is desired to raise the pick up arm from the record, it is swungupwardly uponthe pivot points 22 to the position shown' in Fig. 3,

the spring 23 throwing over center as above described and holding thepick up arm in raised position until it is again manually lowered to theoperative position.

I claim:

1. In a phonograph, a horizontal platform, a Vertical post journaled insaid platform, a bracket upon the top of the post and having notchesopen through its outer end, a hollow pick up arm having studs upon itsinterior detachably pivoted in said notches and a pull spring connectedto the outer end of the pick up arm and to the inner end of the bracketfor holding the pick up arm assembled upon the bracket and for holdingthe pick up arm in either angular raised or substantially horizontallowered position.

2. In a phonograph, a horizontal platform, a vertical post journaled insaid platform a bracket upon the top of the post and having notches openthrough its outer end, a hollow pick up arm having studs upon itsinterior detachably pivoted in said notches and a pull spring connectedto the outer end of the pick up arm and to the inner end of the bracketfor holding the pick up arm assembled upon the bracket and for holdingthe pick up arm in either angular raised or substantially horizontallowered position, and an adjustable stop carried by the pick up arm forcontact with the bracket for limiting the downward movement of the pickup arm.

3. In a phonograph, a horizontal platform, 3.

vertical post journaled on said platform, a bracket upon the top of thepost and having notches open through its outer end, a hollow pick up armreceiving said bracket and having studs upon its interior detachablypivoted in said notches,

and a pull spring having one end connected to the outer end of the pickup arm above said studs and its other end connected to the inner end ofthe bracket below said studs so that the spring throws over center ofthe studs when the pick up arm is pivoted upon the studs, and holds thepick up arm in either angular raised or substantially horizontal loweredposition.

4'. In a phonograph, a horizontal platform, a

vertical post J'ournaled on said platform, a bracket upon the top of thepost and having notches ope n through its out-er end, a hollow pick uparm receiving said bracket and having studs upon its ,tact with thebracket for limiting the downward movement of the pick up arm.

5. Ina phonograph, a horizontal platform, a channel shape bracketjournaled upon said platform and having upright flanges at its sideedges provided with notches open through their outer ,ends, a hollowpick up arm receiving said bracket andhaving studs upon its interiordetachably pivoted in said notches, and a pull spring having one endconnected to the outer end of the pick up arm above said studs and itsother end connected to the inner end of the bracket below said studs sothat the spring throw over center of the studs when the pick up arm ispivoted upon the studs, and holds the pick up arm in either angularraised or substantially horizontal lowered position.

6. In a phonograph, a horizontal platform, a channel shape bracketjournaled upon said platform and having upright flanges at its sideedges provided with notches open through their outer ends, a hollow pickup arm receiving said bracket and having studs upon its interiordetachably pivoted in said notches, and a pull spring having one endconnected to the outer end of the pick up arm above said studs and itsother end connected to the inner end of the bracket below said studs sothat the spring throws over center of the studs when the pick up arm ispivoted upon the studs, and holds the pick up arm in either angularraised or substantially horizontal lowered position, and an adjustablestop carried by the pick up arm for contact with the bracket forlimiting the downward movement of the pick up arm.

EMMOR V. SCHNEIDER.

